Hi! Does anybody know what this might be?

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How to perform correctly the Fenton reaction for the antioxidant assay?

I followed the method described by Yan 2013 (doi:10.3390/molecules18010167): - 1 ml 0.435 mM brilliant green - 2ml 0.5 mM FeSO4 - 1.5 ml H2O2 3% - 1 ml sample The problem appears when measuring...

12 May 2022 755 4 View

How to match the matrix of a solution resulted by microwave digestion of a cement powder??

I have solutions resulted by microwave digestion of cement powders using 2ml HCl, 2ml HNO4 and 1ml HF (the HF excess was neutralized with 10 ml of H3BO3). The solution resulted from digestion was...

20 November 2019 6,745 2 View

Please someone give me a professional opinion about the results of the linked CT-examination. What are the chances for this baby?

Link to download the CT examination : https://we.tl/On1PVolK1O

16 March 2017 9,741 2 View

What is the average number of cysteine residues in serum proteins?

In ballpark figures, can anyone tell me what the average number of cysteine residues per (bovine) serum protein is? For instance, albumin has 35 cysteine residues out of some 580 total residues,...

11 August 2014 4,833 3 View

How can one preferentially stain for either a polymer or a protein in TEM images?

I would like to preferentially stain for polyvinylpyrrolidone or a globular protein (in a TEM sample) when they are both coating a silver nanoparticle. The common staining methods don't...

14 June 2014 3,940 4 View

QuantumWise, there is any version of the code for Windows? it is possible to download it?

QuantumWise software package offers unique capabilities for simulating electrical transport properties of nanodevices on the atomic scale.

09 August 2011 2,582 1 View

What standards are used for XRF studies on Fossil Bones?

We are attempting to do XRF analyses on Eocene fossil bones that have been recovered from limestone and shale units. However, we are a little uncertain about the standard that needs to be used in...

08 October 2023 2,447 0 View

Why is limestone found all over the globe during the Eocene epoch? Is there any relationship between climate and limestone depositional environment?

How did climate conditions influence the formation of limestone?

10 August 2023 1,372 0 View

Why is limestone found all over the globe during the Eocene epoch? Is there any relationship between climate and limestone depositional environment?

How did climate conditions influence the formation of limestone?

10 August 2023 986 0 View

What is the relationship between Izanagi plate and porphyritic copper mineralization around Mt.Paektu in late cretaceous to Eocene ?

I found a effusive rock sample with copper content(1.8%) about 50 km SSE from the Mt. along the deep fault belt. I expect a large porphyritic Cu-Au deposit.

01 July 2023 5,207 0 View

How can I delete an article page?

Dear RG staff I'm Simone Seghetti. I'm writing to you for an issue about an article which I had incorrectly uploade (following...

18 April 2023 9,797 3 View

Is this species echinoid?

This species is witnessed in nummulitic bed of middle Eocene the second (with scale) and third image looks like to be a echinoid spine?

08 January 2023 7,805 7 View

Is the identification of an Eocene ant possible?

Hello, I have been sent from Poland this piece of amber from the Baltic Eocene period. Could this species be identified? Thank you and best regards.

09 November 2022 8,468 2 View

What is this?

Hello everyone, I'm currently working on Early Eocene L.B.F. in Iran. These thin sections display axial section A form of them. This species is associated with Alveolina sp., Rotalids &...

21 April 2022 2,072 3 View

Why the pCO2 threshold is 750 ppm? What drives it?

During the Eocene Oligocene Transition pCO2 dropped from 2000 to 600 pm and Antarctic glaciation initiated. Why the pCO2 threshold is 750 ppm? What drives it?

28 October 2021 2,160 0 View

How we can explain Low TOC and S2 values in ancient deep marine turbidite rocks- Cretaceous to Eocene ?

I am working on deep marine shale rocks (turbidite) of late Cretaceous to late Eocene age in Sarawak. TOC and S2 values are very low (around 0.5 wt % or less- with a few above 1 wt %) along with...

03 September 2020 3,619 5 View